Example usage for javax.crypto Cipher getInstance

List of usage examples for javax.crypto Cipher getInstance

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Introduction

In this page you can find the example usage for javax.crypto Cipher getInstance.

Prototype

public static final Cipher getInstance(String transformation)
        throws NoSuchAlgorithmException, NoSuchPaddingException

Source Link

Document

Returns a Cipher object that implements the specified transformation.

Usage

From source file:de.uzk.hki.da.passwordEncryptor.passwordEncryptor.java

private static String encryptPasswordForContentBroker(String password) {

    byte key[] = "394z57f4".getBytes();
    byte encryptedPassword[];

    try {//w  w w .ja va  2s .  c  o m
        SecretKey secretKey = SecretKeyFactory.getInstance("DES").generateSecret(new DESKeySpec(key));

        Cipher encrypt = Cipher.getInstance("DES/CBC/PKCS5Padding");
        encrypt.init(Cipher.ENCRYPT_MODE, secretKey,
                new IvParameterSpec(new byte[] { 0x01, 0x02, 0x04, 0x10, 0x01, 0x02, 0x04, 0x10 }));
        encryptedPassword = encrypt.doFinal(password.getBytes());
    } catch (GeneralSecurityException e) {
        throw new RuntimeException("Couldn't encrypt password " + password + e);
    }

    return new String(Base64.encodeBase64(encryptedPassword));
}

From source file:com.sds.acube.ndisc.xnapi.XNApiDesCipher.java

/**
 * /*from w w  w .j  a  v  a2 s. c  o m*/
 * 
 * @param data  ?
 * @return  ?
 */
public static String encrypt(String data) {
    try {
        Cipher cipher = Cipher.getInstance("DESede/ECB/PKCS5Padding");
        cipher.init(Cipher.ENCRYPT_MODE, getKey());
        byte e[] = cipher.doFinal(data.getBytes());
        return Base64.encodeBase64String(e);
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

From source file:Main.java

public static void decrypt(String fileIn, String fileOut, byte key[])
        throws IOException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException {
    FileInputStream fis = new FileInputStream(fileIn);
    FileOutputStream fos = new FileOutputStream(fileOut);

    // Length is 32 bytes
    //byte key[] = "1010110101010101010100101111001001001001001001011110111100000011010110101010101010100101111001001001001001001011110111100000011010110101010101010100101111001001001001001001011110111100000011010110101010101010100101111001001001001001001011110111100000011010110101010101010100101111001001001001001001011110111100000011010110101010101010100101111001001001001001001011110111100000011010110101010101010100101111001001001001001001011110111100000011010110101010101010100101111001001001001001001011110111100001111000011".getBytes("UTF-8");
    MessageDigest sha = MessageDigest.getInstance("SHA-256");
    key = sha.digest(key);//from w  w w.  j  av  a 2 s .com
    SecretKeySpec sks = new SecretKeySpec(key, "AES");
    Cipher cipher = Cipher.getInstance("AES");
    cipher.init(Cipher.DECRYPT_MODE, sks);

    CipherInputStream cis = new CipherInputStream(fis, cipher);
    int b;
    byte[] d = new byte[8];
    while ((b = cis.read(d)) != -1) {
        fos.write(d, 0, b);
    }

    fos.flush();
    fos.close();
    cis.close();
}

From source file:de.uzk.hki.da.utils.PasswordUtils.java

public static String decryptPassword(String password) {

    byte key[] = "394z57f4".getBytes();
    byte decryptedPassword[];

    try {//  ww w  .  j  a  v  a2 s.c o m
        SecretKey secretKey = SecretKeyFactory.getInstance("DES").generateSecret(new DESKeySpec(key));
        Cipher decrypt = Cipher.getInstance("DES/CBC/PKCS5Padding");
        decrypt.init(Cipher.DECRYPT_MODE, secretKey,
                new IvParameterSpec(new byte[] { 0x01, 0x02, 0x04, 0x10, 0x01, 0x02, 0x04, 0x10 }));
        decryptedPassword = decrypt.doFinal(Base64.decodeBase64(password.getBytes()));

    } catch (GeneralSecurityException e) {
        throw new RuntimeException("Couldn't decrypt password " + password + e);
    }

    return new String(decryptedPassword);
}

From source file:com.tydic.dbp.utils.ThreeDesUtils.java

public static String encryptMode(String Src) {
    try {/*w ww  . j a  va2s  . c  om*/
        // ?
        SecretKey deskey = new SecretKeySpec(keyBytes, Algorithm);
        // 
        Cipher c1 = Cipher.getInstance(Algorithm);
        c1.init(Cipher.ENCRYPT_MODE, deskey);
        return Hex.encodeHexString(c1.doFinal(Src.getBytes()));
    } catch (java.security.NoSuchAlgorithmException e1) {
        e1.printStackTrace();
    } catch (javax.crypto.NoSuchPaddingException e2) {
        e2.printStackTrace();
    } catch (java.lang.Exception e3) {
        e3.printStackTrace();
    }
    return null;
}

From source file:com.amazonaws.tvm.AESEncryption.java

public static byte[] encrypt(String clearText, String key, byte[] iv) throws Exception {
    Cipher cipher = Cipher.getInstance(ENCRYPTION_ALGORITHM);
    AlgorithmParameters params = AlgorithmParameters.getInstance("AES");
    params.init(new IvParameterSpec(iv));
    cipher.init(Cipher.ENCRYPT_MODE, getKey(key), params);
    return cipher.doFinal(clearText.getBytes());
}

From source file:com._64bitlabs.util.Encryptors.java

/**
 * Encrypts string value with the specified AES algorithm
 * @param Data string to be encrypted//from  w ww  .  ja va2  s.  c o  m
 * @return encrypted string
 */
public static String encrypt(String Data) {
    try {
        Key key = generateKey();
        Cipher c = Cipher.getInstance(ALGORITHM);
        c.init(Cipher.ENCRYPT_MODE, key);
        byte[] encVal = c.doFinal(Data.getBytes());
        Base64 encoder = new Base64();
        String encryptedValue = new String(encoder.encode(encVal)).trim();
        return encryptedValue;
    } catch (Exception e) {
        return null;
    }
}

From source file:de.hybris.platform.b2b.punchout.services.impl.SymmetricManager.java

public static String encrypt(final String unsecureText, final String key) throws PunchOutCipherException {
    String encrypted = null;//from ww w  .  j a  v a  2  s .  co  m
    try {
        final Key skeySpec = new SecretKeySpec(new Base64().decode(key), ALGORITHM);
        final Cipher cipher = Cipher.getInstance(ALGORITHM);
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec);

        final byte[] encryptedValue = cipher.doFinal(unsecureText.getBytes());
        encrypted = new Base64().encodeAsString(encryptedValue);
    } catch (final NoSuchAlgorithmException | NoSuchPaddingException e) {
        // should never happen
        LOG.error("System was unable instantiate Cipher.", e);
    } catch (InvalidKeyException | BadPaddingException | IllegalBlockSizeException e) {
        final String msg = "Error occured during encryption." + e.getMessage();
        LOG.error(msg);
        throw new PunchOutCipherException(msg, e);
    }

    return encrypted;
}

From source file:com.feedzai.commons.sql.abstraction.util.AESHelper.java

/**
 * Encrypts a string./*ww  w  .  j a  v a  2s  . c  om*/
 *
 * @param c The string to encrypt.
 * @return The encrypted string in HEX.
 */
public static String encrypt(String c, String key) {
    try {
        SecretKeySpec skeySpec = new SecretKeySpec(Hex.decodeHex(key.toCharArray()), "AES");
        Cipher cipher = Cipher.getInstance("AES");
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
        byte[] encoded = cipher.doFinal(c.getBytes());
        return new String(Hex.encodeHex(encoded));

    } catch (Exception e) {
        logger.warn("Could not encrypt string", e);
        return null;
    }
}

From source file:com.esri.geoevent.datastore.Crypto.java

static public String doEncrypt(String stringToEncrypt) throws GeneralSecurityException {
    Cipher c = Cipher.getInstance(ALGO);
    c.init(Cipher.ENCRYPT_MODE, encryptionKey);
    byte[] encVal = c.doFinal(stringToEncrypt.getBytes());
    String encodedEncryptedString = new String(Base64.encodeBase64(encVal));
    return encodedEncryptedString;
}